1. If a home computer
user wants access to national database networks he/she at least requires
(a) a microcomputer, a modem, a telephone line
(b) a microcomputer, a tele-printer, a telephone line
(c) a microcomputer, communications soft-ware, a telephone line
(d) a microcomputer, a modem, communications software, a telephone line
ANS: d
2. Which of the
following factors does not affect the total time taken to generate by using computers?
(a) entry of data
(b) complexity of calculations to be performed
(c) type and format of output required
(d) power of the processor
(e) speed of the printer
(f) place where the computer is kept
ANS: f
3. Which of the
following functions of a computer is wrong?
(a) it obtains data from an input device
(b) it processes the data and delivers the final results to an output device
(c) it takes processing steps from the list of instructions called program
(d) it stores the program and data in memory.
(e) It generates the program on its own.
ANS: e
4. The heart of a
computer is
(a) CPU
(b) Memory
(c) I/O Unit
(d) Disks
ANS: a
5. A computer
consists of
(a) a central processing unit
(b) a memory
(c) input and output units
(d) All the above.
ANS: d
6. Which of the
following is not used as secondary storage?
(a) semiconductor memory
(b) magnetic disks
(c) magnetic drums
(d) magnetic tapes
ANS: a
7. Which of the
following memory is capable of operating at electronics speed?
(a) semiconductor memory
(b) magnetic disks
(c) magnetic drums
(d) magnetic tapes
ANS: a
8. Which of the
following is responsible for coordinating various operations using timing signals?
(a) Arithmetic-logic unit
(b) Control unit
(c) Memory unit
(b) I/O unit
ANS: b
9. The ALU of a
computer normally contains a number of high speed storage elements called
(a) semiconductor memory
(b) registers
(c) hard disk
(d) magnetic disk
ANS: b
10. Memories in which
any location can be reached in a fixed (and short) amount of time after
specifying its address is called
(a) sequential-access memory
(b) random-access memory
(c) secondary memory
(d) mass storage
ANS: b
11. Which of the
following is the fastest?
(a) CPU
(b) Magnetic tapes and disks
(c) Video terminal
(d) Sensors, mechanical controllers
ANS: a
12. Modern computers
do not work with decimal numbers. Instead, they process binary numbers i.e.,
groups of Os and 1s because
(a) electronic devices are most reliable when designed for two state (binary) operation
(b) binary circuits are simple
(c) memory is only possible for binary numbers
(d) with decimal numbers, the circuits are complex and costly
(e) with decimal numbers, processing speed is slow
ANS: a
13. A computer can be
defined as an electronic device that can (choose the most precise definition)
(a) carry out arithmetical operations
(b) carry out logical functions
(c) do complicated calculations
(d) accept and process data by implementing sequentially a set of stored instructions.
(e) Present information to the operator on a visual display unit
ANS: d
14. Stored
instructions and data in digital computers consists of
(a) alphabets
(b) numerals
(c) characters
(d) scripts
(e) bits
ANS: e
15. A digital
computer performs its computations by
(a) mechanical means
(b) analogy
(c) guessing
(d) counting
(e) None of the above.
ANS: d
16. Binary coded
decimal (BCD) numbers express each decimal digitals as
(a) binary digits
(b) digits and strings
(c) nibble
(d) word
(e) byte
ANS: c
17. The basic
operation performed by a computer is
(a) arithmetic operations
(b) logic operations
(c) storage and retrieval operations ../(d) all the above
(e) None of the above.
ANS: d
18. Who is regarded
as the Father of computers?
(a) Abascus
(b) John Napier
(c) Pascal
(c) Charles Babbage
(e) Hollerith
ANS: c
19. The analog
computer deals directly with
(a) number or codes
(b) measured values of continuous physical magnitude
(c) signals in the form of 0 or 1
(d) signals in discrete values from 0 to 9
ANS: b
20. Transistor was
invented in
(a) 1945
(b) 1946
(c) 1947
(d) 1948
ANS: d
21. Integrated
circuits are classified according to the
(a) no. of chips
(b) no. of vacuum tube
(c) no. of gates
(d) no. of transistor
ANS: c
22. 1 K bits equals
to the
(a) 1000 bits
(b) 100 bits
(c) 1024 bits
(d) 10 bits
ANS: c
23. The first
microprocessor was introduced in
(a) 1971
(b) 1972
(c) 1973
(d) 1974
ANS: a
24. In terms of
processing power there is a class of computers between minicomputers and
microcomputers known as
(a) Supercomputer
(b) Mainframe
(c) Personal computer
(d) Workstation
ANS: d
25. The biggest
manufacturer of workstations is
(a) Sun Microsystems
(b) IBM
(c) DEC
(d) HP
ANS: a
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